<!DOCTYPE html>
<html lang='en'>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>

<body>
  <!-- 准备好容器 -->
  <div id="test1"></div>
  <div id="test2"></div>
  <div id="test3"></div>

  <!--引入react核心库-->
  <script src="../react.js-16/react.development.js" type="text/javascript"></script>
  <!--引入react-dom，用于支持react操作DOM-->
  <script src="../react.js-16/react-dom.development.js" type="text/javascript"></script>
  <!--引入label，用于将jsx转为js-->
  <script src="../react.js-16/babel.min.js" type="text/javascript"></script>
  <!--引入prop-types，用于对组件标签属性的限制-->
  <script src="../react.js-16/prop-types.js" type="text/javascript"></script>

  <script type="text/babel">
    //1.创建组件>
    class Person extends React.Component {
      render() {
        console.log(this);

        const { name, age, sex } = this.props
        //props是只读的

        return (
          <ul>
            <li>姓名:{name}</li>
            <li>性別:{sex}</li>
            <li>年齡:{age}</li>
          </ul>
        )
      }
    }

    //对标签属性进行类型、必要性的限制
    Person.propTypes = {
      name: PropTypes.string.isRequired, //限制name必传，且为字符串 
      sex: PropTypes.string, //限制sex为字符串
      age: PropTypes.number, //限制age为数值
      speak: PropTypes.func  //限制speak为函数
    }

    //设置默认标签属性值
    Person.defaultProps = {
      sex: 'unknow', //sex默认值为unknown
      age: 18 //age默认值为18
    }

    //2.渲染组件到页面
    ReactDOM.render(<Person name='tom' age={19} sex='nan' />, document.getElementById('test1'))
    ReactDOM.render(<Person name='007' age={20} speak={speak} />, document.getElementById('test2'))

    const p = { name: '456', age: 18, sex: 'nv' }
    ReactDOM.render(<Person {...p} />, document.getElementById('test3'))

    function speak() {
      console.log('speaking');
    }
  </script>
</body>

</html>